Well...if you operate any laser over 5mW, it is STRONGLY recommended to wear safety goggles. Most people don't but better to pay a few bucks than screwing up your eyes!
So as long as you don't look directly in the diode (NEVER DO THIS!), I guess your OK for not wearing some...I have my PHR (90-100mW), without glasses its not to bright and I never notcied anything funny with my eyes when I took off my glasses to see.
Im not the best person to answer this question but I recommend safety goggles for anything over 5mW!
Kyle